The global push for decarbonization by 2050 to combat the issues associated with fossil fuels has intensified the search for sustainable alternatives like hydrogen-derived energy. Hydrogen, as an abundant energy carrier, is poised to facilitate the decarbonization of different industries and sectors, marking a significant transition towards a greener future. Efforts in Spain, in alignment with the EU's Sustainable Growth Strategy, are underway to deploy hydrogen energy technologies to drive the country's decarbonization objectives. Hydrogen's versatility, from power-to-X pathways to its high potential in integrating renewable energies, offers a promising solution for energy decarbonization. Despite the challenges related to technology maturity and distribution capacity, hydrogen is projected to represent 14% of the EU's energy mix by 2050. The advantages of hydrogen, including zero CO2 emissions, high energy density, and safety characteristics, position it as a favorable choice in the quest for sustainable energy sources. Various methods of hydrogen production, from non-renewable fossil resources to renewable sources and nuclear energy, are being explored to enhance the efficiency and sustainability of hydrogen production, ultimately contributing to the global decarbonization efforts.